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Les facteurs de risque de cancer du sein chez les femmes marocaines dans la région Fès, Maroc

Abstract : Introduction Breast cancer is the most common cancer among women worldwide. In Morocco, as in many countries that are either developing or in epidemiological transition, breast cancer incidence rates have clearly risen. Numerous risk factors for female breast cancer have been identified in the literature, but their role in breast cancer among Moroccan women remains poorly documented. The purpose of this doctoral work was to investigate the association between several risk factors and breast cancer among Moroccan women in the Fez region, Morocco. Methods Our analyses were based on data from two case controls studies conducted in the Fez region, Morocco: "Fez Breast Cancer Study" (2014-2015) including 237 cases and 237 age-matched controls, and the "BreCaFez Study" (2016-2017) including 300 cases and 300 controls matched by age and area of residence. Detailed information on various risk factors of breast cancer were collected through face-to face interviews. Odds ratios and 95% confidence intervals, adjusted for potential confounders were estimated by using logistic regression models. Results Our findings suggest that (1) Early menarche and nulliparity were significantly associated with an increased risk of breast cancer among women of our population, whereas an early age at first full-term pregnancy was associated with a significantly decreased risk of breast cancer. (2) High healthy lifestyle index scores were associated with decreased risk of breast cancer in Moroccan women included in our study. (3) Central adiposity and body shape trajectory were positively associated with breast cancer risk in both pre- and post-menopausal women; whereas, a significant inverse association was observed between silhouette at young ages (6- 11 years) and BC risk for premenopausal women and a borderline significant inverse association for postmenopausal women. (4) Women employed in specific agricultural occupations, particularly those who worked as crop farm laborers, had an elevated risk of breast cancer compared to those who never worked in these occupations and the risk increased with duration of employment. Conclusion Our results showed the association between some risk factors and breast cancer among women in our region. It identified some susceptible groups at high risk of breast cancer. Preventive interventions and screening should focus on these groups as a priority. However, our findings should be confirmed in larger, multicenter studies
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Submitted on : Friday, June 26, 2020 - 1:02:51 AM
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Mohamed Khalis. Les facteurs de risque de cancer du sein chez les femmes marocaines dans la région Fès, Maroc. Santé publique et épidémiologie. Université de Lyon, 2019. Français. ⟨NNT : 2019LYSE1038⟩. ⟨tel-02881688⟩

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